12-ID-B routinely conducts simultaneous SAXS/WAXS measurements on biological macromolecules (protein, nucleic acids, complexes, etc) and other aqueous solution samples.


  • Batch mode

    • Room temperature autosampler
    • Variable temperature autosampler
  • FPLC (size exclusion SAXS)

    • Available SEC Columns:
    • Superdex 75 Increase 5/150 GL, MW: 3-70KDa; bed volume: 3ml; typical running time: 20-30min
    • Superdex 75 Increase 10/300 GL, MW: 3-70KDa; bed volume: ~24ml; typical running time: 1-2hrs
    • Superdex 200 Increase 5/150 GL, MW: 10-600KDa; bed volume: 3ml; typical running time: 20-30min
    • Superdex 200 Increase 10/300 GL, MW: 10-600KDa; bed volume: ~24ml; typical running time: 1-2hrs
    • Superose 6 Increase 10/300 GL, MW: 5-5000KDa; bed volume: ~24ml; typical running time: 1-2hrs
  • Stop flow (time resolved SAXS)


Batch Mode Requirements

Samples must be pure and stable. The volume of each sample / buffer is >=100 uL (140-160uL is easier for operation and recommended if having sufficient materials). To correct possible structure factor (influence of inter-particle interaction among molecules under study), three or more concentrations are recommended for each type sample/molecule, e.g., 1, 2, 4 mg/ml. Besides samples, matching buffers are also required for background measurements. To reduce the influence of possible beam drifting, measurements are done in the following order: one buffer, 3-4 samples, one buffer, 3-4 samples, ...

Autosampler Requirements


  • Shipping Address

    • Name of Beamline Contact c/o your name
    • Building 433-E030 (Sector 12)
    • 9700 South Cass Ave
    • Lemont, IL 60439
  • Instructions

    • There is no package delivery on Saturdays, Sundays, and holidays; please plan in advance.
    • Indicate on the outside of the carton storage conditions: frozen or 4 degrees C
    • Batch mode / Eppendorf tubes
    • 96 well plates

  • User Registration and Sample Holder Request

    • link
  • Holder request for 96 well plate ONLY

    • link
  • Holder request for Eppendorf tube

    • link

  • Manual for Autosampler

    • link
  • BioSAXS workshop

    • link
  • BioSAXS analysis

    • link